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Title: Instrument for analysis of electric motors based on slip-poles component

Abstract

A new instrument for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician.

Inventors:
 [1];  [2];  [1]
  1. (Knoxville, TN)
  2. (Clinton, TN)
Publication Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
870706
Patent Number(s):
US 5578937
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
instrument; analysis; electric; motors; based; slip-poles; component; monitoring; condition; speed; operating; motor; remote; location; derived; current; signal; magnitude; provides; basis; monitor; frequency; result; simple-to-understand; health; easy-to-use; package; straightforward; indications; running; rotor; bar; synthesized; sound; audible; indication; provided; device; relatively; untrained; worker; diagnose; field; requiring; presence; trained; engineer; technician; electric motor; motor current; remote location; current signal; motor speed; slip-poles component; electric motors; component provide; /324/318/

Citation Formats

Haynes, Howard D., Ayers, Curtis W., and Casada, Donald A. Instrument for analysis of electric motors based on slip-poles component. United States: N. p., 1996. Web.
Haynes, Howard D., Ayers, Curtis W., & Casada, Donald A. Instrument for analysis of electric motors based on slip-poles component. United States.
Haynes, Howard D., Ayers, Curtis W., and Casada, Donald A. Mon . "Instrument for analysis of electric motors based on slip-poles component". United States. https://www.osti.gov/servlets/purl/870706.
@article{osti_870706,
title = {Instrument for analysis of electric motors based on slip-poles component},
author = {Haynes, Howard D. and Ayers, Curtis W. and Casada, Donald A.},
abstractNote = {A new instrument for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {1}
}

Patent:

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